Title 35 › Part PART III— - PATENTS AND PROTECTION OF PATENT RIGHTS › Chapter CHAPTER 31— - INTER PARTES REVIEW › § 316
The Director must write rules that explain how inter partes review works. The rules must make case files public, allow asking to seal documents while a sealing request is decided, say when a review can start, let parties send extra information after filing, and explain how these reviews fit with other patent matters. The rules must limit discovery to things like depositions of people who gave sworn statements and other things needed for justice, set penalties for misuse or delay, protect confidential information, let the patent owner file a response with supporting facts and expert statements after a review starts, and let the owner try to amend the patent to cancel claims or propose a reasonable number of replacement claims (and make any amendment evidence public). The rules must allow an oral hearing, require a final decision within 1 year of starting the review (extendable no more than 6 months for good cause), set how to request joinder, and give the petitioner at least one chance to file written comments. The Director must consider effects on the economy, the patent system, and the Office’s ability to finish reviews on time. The Patent Trial and Appeal Board runs the reviews. During a review, the patent owner may file one motion to amend to cancel challenged claims or propose reasonable substitute claims. More amendment motions are allowed only if both sides ask to help a settlement or the rules allow it. Amendments cannot broaden claims or add new subject matter. The petitioner must prove unpatentability by a preponderance of the evidence.
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Patents — Source: USLM XML via OLRC
Legislative History
Reference
Citation
35 U.S.C. § 316
Title 35 — Patents
Last Updated
Apr 6, 2026
Release point: 119-73